CVE-2021-20677

low-risk

Published 2021-03-26

UNIVERGE Aspire series PBX (UNIVERGE Aspire WX from 1.00 to 3.51, UNIVERGE Aspire UX from 1.00 to 9.70, UNIVERGE SV9100 from 1.00 to 10.70, and SL2100 from 1.00 to 3.00) allows a remote authenticated attacker to cause system down and a denial of service (DoS) condition by sending a specially crafted command.

Do I need to act?

0.30% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 3.1/10 Low

NETWORK / HIGH complexity

Affected Products (4)

Univerge Aspire Wx Firmware

Univerge Aspire Ux Firmware

Univerge Sv9100 Firmware

Sl2100 Firmware

Affected Vendors

Necplatforms

References (4)

Third Party Advisory https://jvn.jp/en/jp/JVN12737530/index.html

Vendor Advisory https://www.necplatforms.co.jp/en/press/security_adv.html

Third Party Advisory https://jvn.jp/en/jp/JVN12737530/index.html

Vendor Advisory https://www.necplatforms.co.jp/en/press/security_adv.html

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low-risk

Severity 11/34 · Low

Exploitability 1/34 · Minimal

Exposure 10/34 · Low